Connect ADO And LINQ In 2008 .NET 3.5?
Jun 16, 2010
I am loading al lot of data from a server to a local PC. Then i crate a disconnected table localy and move data from the server to the local PC.Then to update the userinterface (Wondows forms datagridview) i think i will use Linq ti move from this local tabel to the datagridview. On server there is 1000 000 rows in first tabel(source), to the user i have 30 000 rows each time the user loads forms and greate a smaler local table.That is once a day. But each time the user move to next row in datatabel there is 12 rows from my local table who is printed into the a new datagriview.How do i connect Linc to my ado table ?
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Jan 27, 2012
Here's my SQL query:
SELECT EmployeeID, EmployeeLastName + ', ' + EmployeeFirstName AS Name
FROM employees
ORDER BY Name
How can I go about doing the something in LINQ to SQL?
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Jan 6, 2010
I can't connect to the "Service-Based Data Base" or to the "Linq To Sql classes". I tried all that I've read in the Forums for days : ( I removed the VB 2008 and SQL 2205-2208, then upload VB 2008 from my CD only. I'm starting a Web Technology class in 2 weeks, and the complition of the book is my entry requirement.
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Jul 7, 2009
I have a programmer who is using VB and LINQ; and I have a MySQL database that is running on a linux server. My programmer tells me that:he cannot connect to the MySQL database via LINQ if he was able to connect then it would require all sorts of rewriting I don't know anything about LINQ but I thought it was an ORM. As such, any DB server that is supported should work just fine? Right? OK, so maybe it's not an ORM... maybe it should generically connect to ODBC and render similar results?
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Apr 20, 2010
I just upgraded a project from VB 2008 to VB 2010. Before, the project did not use LINQ. I have started implementing it. So, I have updated the target framework from 2.0 to 3.5, and added a reference to System.Core, and imported the namespace System.LINQ to the entire project and also imported System.Data.LINQ into the form I'm working with (because it was not available in the list for Imported Namespaces in the references tab).
It's not throwing any errors now, but my IntelliSense is not working for LINQ stuff.
For example... I write this:
[CODE]....................
Then, if I type S. on the next line, the IntelliSense doesn't grab what it should for S (Only get Equals, GetHashCode, GetType, ReferenceEquals, and ToString, instead of the options I should get like Count, First, FirstOrDefault, etc...). If I Type S.First. then its the same thing, no IntelliSense that lists the available fields for S, just the standard options (Equals, GetHashCode, GetType, ReferenceEquals, and ToString). I should be seeing my column names in my table when I type S.FirstOrDefault.
So any ideas what is going on? When I type the code, for example, MessageBox.Show(S.FirstOrDefault.FirstName), it works perfectly. But it doesn't change the casing of the text (so it would read s.firstordefault.firstname) and no intellisense while doing it. But no errors. BTW - Everything works perfectly when creating a NEW VS 2010 application, it's just my projects upgraded from Visual Basic 2008 that have this issue.
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Jan 12, 2012
I am using VB 2008 express and SQL Server 2008 express on a test basis and I used to connect VB express to a SQL database (created in SQL Server 2008 Express management studio) file and it work perfectly until my hard drive packed up and I had to get a new one, so I had to reinstall both of these again and copied my old databases from a backup I had. Now when I try to connect to the database file it cannot connect. Network related error or the instance name is incorrect. When I look at the advanced options in the connect dialog it shows my instance as .SQLExpress and my correct instance name is .SQL2008Express. I clicked OK on the connect dialog and manually changed my connection string to the correct instance and that worked but whenever I run the application in debug mode it give me the same error as above.
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Mar 31, 2010
Can i connect MS access 2007 to VB 2008?
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Sep 30, 2011
We have a VB.Net application which works fine in our tests in different Windows XP SP3 machines. However there is one machine in which is displaying this error:
Unable to connect to any of the specified MySQL hosts
Using the mysql command, we can successfully connect to the database. We already checked for any other application or firewall that could be blocking the connection but it seems fine. We also reinstalled the system (no errors during the installation) but the MySQL error message doesn't change.
The system settings are exactly the same as in the other computers. We are using "localhost" as server in the connection string. The "hosts" file has its default values (nothing strange in there).
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Jan 16, 2012
I'm working on an application where I'm using an webcam image. I have code that works when using the built in iSight (It's an Apple running boot camp windows 7) camera. However after installing a second USB powered Microsoft Life Cam I am unable to connect to this second camera. When runnign this code I only ever get one input device:
Private Sub LoadDeviceList()
Dim strName As String = Space(100)
Dim strVer As String = Space(100)
[Code].....
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Sep 5, 2011
I run my application (vb 6) from win xp 32 bit, and connect to SQL 2008 R2 in Win 2008 Server, but didn't work.
i try to connect from ODBC Data Sources in Win XP to connect SQL 2008 R2 in Win 2008 Server, it also didn't work.
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Mar 10, 2011
I'm using 2-dim array of buttons that change color after click should I check for win for only the last clicked button or check the whole grid for win after each button click?
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Jul 20, 2011
i'm doing my final year project.i dont know how to connect my vb program with my database.
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Feb 12, 2009
i'm using Visual Basic 2008 Express and SQL Server 2008. I have created a database using SQL Server 2008, but when i try and connect to the data source within VB 2008 there is no option for Microsoft SQL Server(SQLClient)
when i go to add References to my project System.Data.SQLClient is not available.
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Jun 5, 2011
How to connect mysql to visual basic 2008?
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Nov 5, 2011
I have a database on SQL Server 2008 and am trying to run code on Visual Basic 2010 to connect to it. I have the following code but am getting the error A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 26 - Error Locating Server/Instance Specified) on the line SQLConn.Open(): [code]I have been working on VBA code and know the serverinstance and database names are correct. Not sure why it's not working under VB.NET 2010.
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Oct 15, 2011
Login form contain two nos.of textbox anb one no.button How to connect VB.net2008 with MS-Access-2007.
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Apr 25, 2009
i know My.Computer.Network.Ping but as alot of people know, it's glitchy and bugged.
I want something that checks to see if it can connect with something, as simple as it sounds.
I'm experimenting with sockets at the moment, but having trouble so i thought i would come and ask here
What i'm up to:
VB
IP = Net.IPAddress.Parse(getinfo("settings.inf", i & "IP"))
socket = New Net.Sockets.Socket(Net.Sockets.AddressFamily.InterNetwork, Net.Sockets.SocketType.Stream, Net.Sockets.ProtocolType.IP)
[Code].....
However the problem with this it that i pinged 1.1.1.1 and it still connects, ALSO i would like to be able to check a hostname not just an IP to make things more convenient, please help me to find a way to properly check a connection with IP or hostname.
Note: The getinfo function is defined by me
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Jul 2, 2010
In Vb.NET I allways use mdb files to my applications.Now, in this one, I need use the Sql Compact Edition.The code isn't the same to connect to the DB?
I'm using this:
DIM connString As String = "Provider=SQLOLEDB;Data Source=|DataDirectory|SITAC.sdf;Password=abc;Persist Security Info=True"
[code].....
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May 29, 2012
I am trying to connect to my remote MySql Database within Visual Studio using the compact framework.
I can successfully add a data source and preview the data within the IDE so assume that the connection is ok regarding Connection strings and remote access.
However, when I attempt to access the data using any run time control I get the following error when the table is loaded using the .fill method.
MySql.Data.MySqlClient.MySqlException was unhandled
ErrorCode=-2147467259
Message="Unable to connect to any of the specified MySQL hosts."
[Code]....
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Dec 21, 2009
I am working on moving a project from VB6 to VB 2008 Express. [Code] When I connect to mysql db in VB6, I connect using adAsynConnect. This way, I have a "Loading..." animation display while a connection is attempted. Is there a way to do this in 2008 Express? Or something similar I could read up on?
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Feb 10, 2010
Can i connect VB.net 2008 (Professional Edition) and Sql Server 2000? It was working fine earlier in vb.net 2003 and sql 2000 My OS is windows 7
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Nov 4, 2010
connect vb.net 2008 to sql 2005 database.
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Apr 22, 2010
how can connect to sql server 2005 or 2008 by vb.net from anther computer ?and this computer donot have sql server.i made search on internet and result was use sql client tools but i made search
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Aug 8, 2009
I would like to know how could i connect my Visual Basic program to a database that can be opened to MS Access. My friend made a program that links to a database that opens in MS Access and when you open the database the inputted data are organized to their respective columns and rows. However he used VB6 in making the program and he wont let me see the syntax. And another thing, the program that he made updates the database everytime a new set of data is inputted.
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Aug 30, 2011
Is there a way to use VB 2008 Express to connect to Oracle 11? When I go to add new data source I dont see anything for ODBC
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Aug 17, 2010
My remote MYSQL allows remote connections so I should be able to connect to it via a VB code.
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Mar 17, 2009
I want to create a service which will connect to the database. So that it can capture any session changes in my laptop namely Login, Logoff Screen Lock & Screen unlock. Then the same can be captured & updated in the database.How to provide the connectivity between the service & the database.How to go about capturing the session change date & time.
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Jul 7, 2009
I have created a local database (.sdf) and added a few records. What I really would like to do is connect to the database manually and load the records in a listview. Anyone with some tutorials?
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Jan 11, 2011
i have a form with a bunch of textbox's that are connected to a ms access data source, so i can update, edit and delete records.I also have 4 radio buttons.What i'm trying to acheive is that when a row is selected in the datagridview, the textboxes show the values in them (id, name, number, etc.),which works perfectly, and the radio buttons should show the value of the "grade" column of the cell that is selected.
So basicaly when you click a record, if the grade is 5 i want the radiobutton5 to be selected. And if i click radiobutton6 it should update the field to 6.
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Aug 29, 2010
If the following is my code in VB6 to connect to Database (Oracle 8i) then what would it be for VB.Net (VS 2008)....?
[Code]....
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